Charles kean



gintten taies iutrnt @frn IMPROVED EXTENSION-SLIDE POR TABLES.

itlgi rlgchnle nient tu it time rttrs nttnt mit mating pnt nt tige time.

TO ALL WHOM I'l MAY CONCERN:

Be it known that I, CHARLES KEAN, of Hollidaysburg, in thecounty of Blair, the State of Pennsylvania, have invented a new and improved Slide for ExtensiomTables; and I do hereby declare that the following is n. full and exact description of the same, reference being had to the accompanying drawings and to the letters ot` reference marked thereon.

'lhe nature of my invention consists in constructing extension-table slides in the following form and manner, viz:

A tongue and groove slide, with the tongues and grooves perpendicular, or worked on theedge ot' the stuff out ot` which they are made. 4

To enable others skilled in the art to rnake and use my invention, I will proceed to describe it.

The slide is composed of three parts, viz, a cap, a. base, and a centre-piece, all of equal thiclinessVworked in the following manner or shape: The centre-piece is grooved on both edges, and the Caps and buses oen one edge, the tongues to be on the outside and inside edges, and the groove in the centre. (See drawings.) Y The tonguesmust be equal to one-fourth the thickness of the stuil' out of which they are worked, thus leaving'rth'e groove equalto one-half the thickness of the stuff, so that two tongues will go in one groove. TheA relative width of centres, caps, and bases is not essential, but should be wide enough to give sufficient strength to the slide,'and afford a secure hold to the fastenings. The slide is put together in the following forni: The caps and bases to be fastened to the edge ot' the centre-piece, projectingone-half their thickness, and leaving the centrepiece project one-half its thickness on the opposite side. To do this quickly and conveniently, place tiro centrepieccs together side by side, with one set oftongues up and the tongues on the other edge resting on the workbench; glace a cap on the two inside tongues, so Athat the tongues of the cap will clamp the tongues of' the centre-pieces; fasten it to onecentre-pieco securely; then turn it over and place abuse on the two inside tongues ofthe opposite edge, and fasten to the same centre-piece; then remove the loose centre and do whatever erasing is necessary to make it work easily; then proceed as before, placingtwo contres together. To finish up theslide on thc outside and inside, take the half of a cap or base and glue it in the opening left by the cap or base in the centre-pieee and dress off wit-h a plane. The slide is to he stopped in the ordinary way, viz, by running a groove in one face ofthe centre and filling it at the ends, and fastening the stop to the adjoining centre, so as' to run in the groove. This slide can be worked in dove-tail, but your petitioner, believing the groove to be the best, thought it unnecessary to describe it.

What I claim, and desire to secure by Letters Patent, is- The grooved centres, caps, andbases, put together in the manner and form set forth for the purpose specified.

CHARLES KEAN.

Witnesses:

J. De LEET, C. G. Lownr. 

